The operational wear and service life of power equipment is closely related to the efficiency of the feedwater treatment plant. Insufficient degree of purification leads to serious violations not only of the operating mode of the equipment, but also contributes to an increase in the rate of corrosion processes. The paper considers a water treatment plant based on membrane technologies with the inclusion of membrane filtration and a reverse osmosis unit in a circulating mode. During the experimental period, water samples were taken at each stage of purification and the main indicators that affect operational wear were determined. Based on the results obtained, conclusions were made, as well as recommendations on the operation of the water treatment plant in a circulating mode.

Keywords: water treatment plant, membrane processes, operational wear of equipment, quality indicators of process waters